** Description changed: [Impact] External monitors on Dell dock are blank or can't be detected. [Fix] Intel submit a patch to fix this issue https://lore.kernel.org/all/[email protected]/ This patch is included in linux-next 06a691f0e7d0 drm/i915/dp_mst: Fix check for FEC support for an uncompressed stream - To resolve the conflicts, cherry picked 2 more commits from linux-next + To resolve the conflicts, cherry picked 3 more commits from linux-next b762ae48293e drm/i915/dp_mst: Reuse the DP-SST helper function to compute FEC config cb6c8f1f6f46 drm/i915/dp: Export helper to determine if FEC on non-UHBR links is required 69df31263bca drm/i915/dp: Ensure the FEC state stays disabled for UHBR links [Test] 1. Connect three external monitor to dock WD22TB4 2. Connect dock to system 3. Do unplug and plug serval times, the monitors should be recognized and work well. [Where problems could occur] Users with MST monitor setups (especially MST docks with multiple monitors) may experience display initialization failures or blank screens when one monitor doesn't support FEC but another monitor on the same link uses DSC compression. Additionally, users could encounter inconsistent display behavior where monitors work or fail depending on the order they're detected or what link rates are negotiated.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2130773 Title: External monitors on Dell dock are blank or can't be detected To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2130773/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
